In fact you want to get a perfect printing model, you need a
reliable printer with the 3D printer at right temperature under
right parameter setting. It means that your printer should under
good condition, your filament should be good enough. The following
tips are based on this question.

Tip 1: What is your idea printing temperature?

In fact different printer series and different printer sensor has
different temperature tolerance. Regardless sensor difference, the
printing temperature of REPRAPPER ABS filament is 200~260, the idea
temperature is 230. Different color has little variance. The
printing temperature of REPRAPPER PLA filament is 170~240, the idea
temperature is 210. Different color has little variance.For UP and Afinia printer, you can use it directly under ABS or PLA
mode (Depends on what material you bought). For Makerbot etc
printer that allows you change the temperature, you can set a
temperature (e.g. 230), then extrude the filament manually before
printing. If you saw the filament can flow up smoothly without
bubble, it means that temperature is ideal setting.

Tips 2 How to avoid printing parts tilt?

It is very important for the first layer. You want to get a
successful printing model you need to assure the platform is
leverage. If the platform is not leverage the probability of tilt
will increase. Before you begin your job you need to confirm the
nozzle to all platform distance is the same.The filament can be stick on ABS board/ solderless breadboard/3M
blue tape/Kapton tape etc.When you printing, the closer between nozzle to platform the better
but should not break the platform.

Tips 3. How to avoid printing failure?

Before you begin your job, you need to confirm:1) The filament is good, no clog and with consistence diameter.
Wired well.2) The filament feed system can feed the filament smoothly to avoid
lack of filament in the extruder during printing.

During printing you need to confirm:

1) The temperature is ideal and the extruded filament at nozzle is
smoothly without bubble.2) The first layer is OK as mentioned above.If you avoid these issue but your still print failure parts, it may
caused by your printer’s reliability. According our experience, the
distinguish of a good printer or bad printer is their reliability.
For FDM mode printer, for one or two model, all printing results is
similar regard the surface. But when print 100 times will them
success 100 times is the make difference point. er are competitive.
For example, for Z axis movement, if your setting is 0.2mm, will
they move 0.2mm exactly? If higher than 0.2mm the extruded filament
may not stick to the near bottom printing model. If less than 0.2mm
it may make the nozzle touch the printed model. Both of that will
cause failure printing.